Hohenberg-Kohn theorems and the Kohn-Sham equations.
The best way to learn is by doing. The official QE website offers a range of hands-on workshops and tutorials. Quantum Espresso Course For Solid-state Physics Pdf
This comprehensive guide serves as a structured course outline and foundational text for students, researchers, and educators seeking a deep understanding of Quantum ESPRESSO in the context of solid-state physics. 1. Fundamentals of DFT and Quantum ESPRESSO Hohenberg-Kohn theorems and the Kohn-Sham equations
